The **CA-RSPNFBA002** is a specialized RF (Radio Frequency) cable assembly typically used in telecommunications and industrial wireless applications. It is designed to bridge the gap between internal radio modules and external antennas. --- ## 1. Technical Specifications The part number follows a specific nomenclature used by manufacturers like **L-com** or **MilesTek**. Below are the core electronic and physical attributes: | Feature | Specification | | :--- | :--- | | **Connector A** | RP-SMA Plug (Reverse Polarity SMA Male) | | **Connector B** | N-Female Bulkhead (Includes O-ring/Nut) | | **Cable Type** | 195-series Coaxial (Low Loss) | | **Impedance** | 50 Ohms (Standard RF) | | **Frequency Range** | DC to 6 GHz | | **Body Material** | Nickel-Plated Brass | --- ## 2. Key Electronic Components ### A. Connector A: RP-SMA Plug * **Reverse Polarity:** Unlike a standard SMA, the RP-SMA plug has a female center socket. This is a regulatory standard often used in Wi-Fi equipment to prevent users from connecting high-gain antennas to consumer-grade routers. * **Interface:** Threaded coupling mechanism ensuring low VSWR (Voltage Standing Wave Ratio). ### B. Connector B: N-Female Bulkhead * **Bulkhead Design:** Includes a long threaded body and hardware (nut and washer) designed to be mounted through a hole in an enclosure. * **Ingress Protection:** Usually features an O-ring seal to prevent moisture from entering the electronic housing. ### C. The Coaxial Medium (195-Series) * **Conductor:** Solid or stranded center conductor for signal transmission. * **Dielectric:** High-grade polyethylene for insulation. * **Shielding:** Double-shielded (typically Foil + Tinned Copper Braid) to prevent EMI/RFI interference and ensure signal integrity. --- ## 3. Typical Application Use Case This part is primarily used in **Outdoor Wireless Enclosure Kits**. 1. **Internal Connection:** The **RP-SMA** end plugs into a Wi-Fi card or radio module inside a weather-proof box. 2. **External Interface:** The **N-Female Bulkhead** is mounted through the wall of the box. 3. **Antenna Connection:** A high-gain outdoor antenna (with an N-Male connector) is then screwed onto the outside of the box. --- ## 4. Signal Loss Considerations Because this is a **195-series** cable, it is "low loss" compared to standard RG-174, but it still attenuates signal based on length. At **2.4 GHz**, you can expect approximately **0.18 dB loss per foot**.